The most annoying thing (only annoying thing?) about the V collection upgrade was version 4 presets could not be used in the new synths.
Arturia have addressed this.
As we have modified in the
V Collection 5 the sound engines of our software instruments the presets from
the V Collection 4 were not compatible. This new preset converter allows you to
open in the latest versions all the sounds you made in the past. Download it
scan your presets in a click, select the ones you want to
convert and you're done!
Download here